diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_aes.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_aes.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_aes.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_aes.c new file mode 100644 index 0000000..f2ac8ae --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/crypto/nrf_crypto_aes.c @@ -0,0 +1,319 @@ +/** + * Copyright (c) 2018 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "sdk_common.h" +#if NRF_MODULE_ENABLED(NRF_CRYPTO) + +#include "nrf_crypto_aes.h" +#include "nrf_crypto_mem.h" +#include "nrf_crypto_error.h" +#include "nrf_crypto_shared.h" +#include "nrf_crypto_aes_shared.h" +#include "nrf_crypto_aes_backend.h" + +#if NRF_MODULE_ENABLED(NRF_CRYPTO_AES) + +static ret_code_t context_verify(nrf_crypto_aes_internal_context_t const * p_context) +{ + if (p_context == NULL) + { + return NRF_ERROR_CRYPTO_CONTEXT_NULL; + } + + if (p_context->init_value != NRF_CRYPTO_AES_INIT_MAGIC_VALUE) + { + return NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED; + } + + return NRF_SUCCESS; +} + +ret_code_t nrf_crypto_aes_init(nrf_crypto_aes_context_t * const p_context, + nrf_crypto_aes_info_t const * const p_info, + nrf_crypto_operation_t operation) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + VERIFY_TRUE((ret_val == NRF_SUCCESS) || (ret_val == NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED), + ret_val); + + VERIFY_TRUE(p_info != NULL, NRF_ERROR_CRYPTO_INPUT_NULL); + + p_int_context->p_info = p_info; + + ret_val = p_info->init_fn(p_context, operation); + + if (ret_val == NRF_SUCCESS) + { + p_int_context->init_value = NRF_CRYPTO_AES_INIT_MAGIC_VALUE; + } + + return ret_val; +} + +ret_code_t nrf_crypto_aes_uninit(nrf_crypto_aes_context_t * const p_context) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + + if (ret_val == NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED) + { + /* If context was uninitialized with function nrf_crypto_aes_finalize it shall be still + possible to clear init_value */ + if (p_int_context->init_value == NRF_CRYPTO_AES_UNINIT_MAGIC_VALUE) + { + ret_val = NRF_SUCCESS; + } + } + VERIFY_SUCCESS(ret_val); + + ret_val = p_int_context->p_info->uninit_fn(p_context); + + p_int_context->init_value = 0; + + return ret_val; +} + +ret_code_t nrf_crypto_aes_key_set(nrf_crypto_aes_context_t * const p_context, uint8_t * p_key) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + VERIFY_SUCCESS(ret_val); + + VERIFY_TRUE((p_key != NULL), NRF_ERROR_CRYPTO_INPUT_NULL); + + ret_val = p_int_context->p_info->key_set_fn(p_context, p_key); + + return ret_val; +} + +ret_code_t nrf_crypto_aes_iv_set(nrf_crypto_aes_context_t * const p_context, uint8_t * p_iv) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + VERIFY_SUCCESS(ret_val); + + VERIFY_TRUE((p_int_context->p_info->iv_set_fn != NULL), NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE); + + VERIFY_TRUE((p_iv != NULL), NRF_ERROR_CRYPTO_INPUT_NULL); + + ret_val = p_int_context->p_info->iv_set_fn(p_context, p_iv); + + return ret_val; +} + +ret_code_t nrf_crypto_aes_iv_get(nrf_crypto_aes_context_t * const p_context, uint8_t * p_iv) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + if (ret_val == NRF_ERROR_CRYPTO_CONTEXT_NOT_INITIALIZED) + { + /* If context was uninitialized with function nrf_crypto_aes_finalize it shall be still + possible to read IV value */ + if (p_int_context->init_value == NRF_CRYPTO_AES_UNINIT_MAGIC_VALUE) + { + ret_val = NRF_SUCCESS; + } + } + VERIFY_SUCCESS(ret_val); + + VERIFY_TRUE((p_iv != NULL), NRF_ERROR_CRYPTO_INPUT_NULL); + + VERIFY_TRUE((p_int_context->p_info->iv_get_fn != NULL), NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE); + + ret_val = p_int_context->p_info->iv_get_fn(p_context, p_iv); + + return ret_val; +} + +ret_code_t nrf_crypto_aes_update(nrf_crypto_aes_context_t * const p_context, + uint8_t * p_data_in, + size_t data_size, + uint8_t * p_data_out) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + VERIFY_SUCCESS(ret_val); + + VERIFY_TRUE((data_size != 0), NRF_ERROR_CRYPTO_INPUT_LENGTH); + + VERIFY_TRUE((p_data_in != NULL), NRF_ERROR_CRYPTO_INPUT_NULL); + + VERIFY_TRUE((p_data_out != NULL), NRF_ERROR_CRYPTO_OUTPUT_NULL); + + if ((data_size & 0xF) != 0) + { + VERIFY_TRUE((p_int_context->p_info->mode == NRF_CRYPTO_AES_MODE_CFB), + NRF_ERROR_CRYPTO_INPUT_LENGTH); + } + + ret_val = p_int_context->p_info->update_fn(p_context, + p_data_in, + data_size, + p_data_out); + + return ret_val; +} + +ret_code_t nrf_crypto_aes_finalize(nrf_crypto_aes_context_t * const p_context, + uint8_t * p_data_in, + size_t data_size, + uint8_t * p_data_out, + size_t * p_data_out_size) +{ + ret_code_t ret_val; + + nrf_crypto_aes_internal_context_t * p_int_context = + (nrf_crypto_aes_internal_context_t *)p_context; + + ret_val = context_verify(p_int_context); + VERIFY_SUCCESS(ret_val); + + VERIFY_TRUE((p_data_in != NULL), NRF_ERROR_CRYPTO_INPUT_NULL); + + VERIFY_TRUE((p_data_out != NULL), NRF_ERROR_CRYPTO_OUTPUT_NULL); + + VERIFY_TRUE((p_data_out_size != NULL), NRF_ERROR_CRYPTO_OUTPUT_NULL); + + ret_val = p_int_context->p_info->finalize_fn(p_context, + p_data_in, + data_size, + p_data_out, + p_data_out_size); + + VERIFY_TRUE((ret_val == NRF_SUCCESS), ret_val); + + ret_val = nrf_crypto_aes_uninit(p_context); + + if (ret_val == NRF_SUCCESS) + { + /* This line will allow to read IV for AES supporting IV get function. */ + p_int_context->init_value = NRF_CRYPTO_AES_UNINIT_MAGIC_VALUE; + } + + return ret_val; +} + +ret_code_t nrf_crypto_aes_crypt(nrf_crypto_aes_context_t * const p_context, + nrf_crypto_aes_info_t const * const p_info, + nrf_crypto_operation_t operation, + uint8_t * p_key, + uint8_t * p_iv, + uint8_t * p_data_in, + size_t data_size, + uint8_t * p_data_out, + size_t * p_data_out_size) +{ + ret_code_t ret_val; + void * p_allocated_context = NULL; + + nrf_crypto_aes_context_t * p_ctx = p_context; + + VERIFY_TRUE(p_info != NULL, NRF_ERROR_CRYPTO_INPUT_NULL); + + if (p_ctx == NULL) + { + p_allocated_context = NRF_CRYPTO_ALLOC(p_info->context_size); + if (p_allocated_context == NULL) + { + return NRF_ERROR_CRYPTO_ALLOC_FAILED; + } + p_ctx = (nrf_crypto_aes_context_t *)p_allocated_context; + } + + ret_val = nrf_crypto_aes_init(p_ctx, p_info, operation); + NRF_CRYPTO_VERIFY_SUCCESS_DEALLOCATE(ret_val, p_allocated_context); + + ret_val = nrf_crypto_aes_key_set(p_ctx, p_key); + NRF_CRYPTO_VERIFY_SUCCESS_DEALLOCATE(ret_val, p_allocated_context); + + ret_val = nrf_crypto_aes_iv_set(p_ctx, p_iv); + /* not all AES modes support IV */ + if (ret_val != NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE) + { + NRF_CRYPTO_VERIFY_SUCCESS_DEALLOCATE(ret_val, p_allocated_context); + } + + ret_val = nrf_crypto_aes_finalize(p_ctx, + p_data_in, + data_size, + p_data_out, + p_data_out_size); + if (ret_val != NRF_SUCCESS) + { + /* Context was not successfully deinitialized in nrf_crypto_aes_finalize */ + UNUSED_RETURN_VALUE(nrf_crypto_aes_uninit(p_ctx)); + } + + if (p_allocated_context != NULL) + { + NRF_CRYPTO_FREE(p_allocated_context); + } + + return ret_val; +} + +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO_AES) +#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) + |